Add custom CSS

[margomius]

Hi,
ist it possible to add custom CSS in the admin panel or via FTP?
If I wanted to change some CSS in the default theme, where would I have to change it?
It should work after updates as well.

Thanks in advance!

[JulianPrieber]

You can just do this by making a custom theme yourself. We got everything you need to make your own theme with a template of the default theme right here